带电粒子在电场中的偏转 一道选择如图6-3-19所示,长方形abcd长ad=0.6 m,宽ab=0.3 m,O、e分别是ad、bc的中点,以ad为直径的半圆内有垂直纸面向里的匀强磁场(边界上无磁场),磁感应强度B=0.25 T.一群不
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![带电粒子在电场中的偏转 一道选择如图6-3-19所示,长方形abcd长ad=0.6 m,宽ab=0.3 m,O、e分别是ad、bc的中点,以ad为直径的半圆内有垂直纸面向里的匀强磁场(边界上无磁场),磁感应强度B=0.25 T.一群不](/uploads/image/z/3573982-46-2.jpg?t=%E5%B8%A6%E7%94%B5%E7%B2%92%E5%AD%90%E5%9C%A8%E7%94%B5%E5%9C%BA%E4%B8%AD%E7%9A%84%E5%81%8F%E8%BD%AC+%E4%B8%80%E9%81%93%E9%80%89%E6%8B%A9%E5%A6%82%E5%9B%BE6-3-19%E6%89%80%E7%A4%BA%2C%E9%95%BF%E6%96%B9%E5%BD%A2abcd%E9%95%BFad%3D0.6+m%2C%E5%AE%BDab%3D0.3+m%2CO%E3%80%81e%E5%88%86%E5%88%AB%E6%98%AFad%E3%80%81bc%E7%9A%84%E4%B8%AD%E7%82%B9%2C%E4%BB%A5ad%E4%B8%BA%E7%9B%B4%E5%BE%84%E7%9A%84%E5%8D%8A%E5%9C%86%E5%86%85%E6%9C%89%E5%9E%82%E7%9B%B4%E7%BA%B8%E9%9D%A2%E5%90%91%E9%87%8C%E7%9A%84%E5%8C%80%E5%BC%BA%E7%A3%81%E5%9C%BA%28%E8%BE%B9%E7%95%8C%E4%B8%8A%E6%97%A0%E7%A3%81%E5%9C%BA%29%2C%E7%A3%81%E6%84%9F%E5%BA%94%E5%BC%BA%E5%BA%A6B%3D0.25+T.%E4%B8%80%E7%BE%A4%E4%B8%8D)
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